YAKIMA WSO AP, WASHINGTON

Monthly Total Heating Degree Days

(459465)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1946 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 194.40 e 594.00 913.00 964.00 2665.40
1947 1154.50 720.00 551.00 342.50 71.00 72.50 3.50 28.50 115.50 432.00 738.50 955.50 5185.00
1948 1047.50 981.50 760.50 528.00 264.00 9.50 16.50 12.50 145.00 442.00 805.00 1282.37 a 6294.37
1949 1561.00 990.00 660.00 380.00 151.50 76.50 25.50 23.50 122.00 549.00 645.00 974.00 6158.00
1950 1630.00 996.50 754.00 550.50 265.50 83.50 12.50 2.00 133.50 528.00 784.50 938.00 6678.50
1951 1135.50 844.00 841.00 430.50 247.50 48.00 15.50 38.00 129.50 522.00 816.50 1200.50 6268.50
1952 1367.00 881.50 747.00 410.00 204.50 111.50 21.00 47.00 85.00 287.00 958.00 1009.50 6129.00
1953 811.00 706.00 675.50 506.00 316.00 194.50 9.50 28.00 145.50 407.50 708.50 888.00 5396.00
1954 1141.00 817.50 794.00 526.00 238.50 178.50 45.00 55.00 172.50 543.50 642.00 1039.50 6193.00
1955 1103.50 851.00 864.00 638.00 341.00 78.00 65.00 20.50 207.00 489.50 1014.50 1250.50 6922.50
1956 1170.50 1225.50 759.50 365.50 160.00 135.50 2.50 23.50 135.50 518.00 896.00 1049.00 6441.00
1957 1520.50 909.50 730.00 410.50 110.00 66.00 30.50 46.50 107.50 530.00 850.00 921.50 6232.50
1958 932.50 623.50 755.00 511.50 115.50 35.00 3.00 13.00 199.50 461.00 828.50 971.50 5449.50
1959 1054.50 843.50 711.50 434.50 370.50 106.50 36.50 43.50 212.50 454.50 897.50 1018.00 6183.50
1960 1327.50 867.50 737.50 478.50 336.00 74.00 0.00 93.00 153.00 438.50 808.50 1170.50 6484.50
1961 1001.00 680.00 685.00 458.50 286.00 58.00 6.50 3.00 210.00 529.50 940.50 1041.00 5899.00
1962 1088.50 825.50 776.00 395.50 351.50 121.00 54.50 41.50 125.00 473.50 715.50 902.50 5870.50
1963 1235.00 762.50 664.00 537.50 245.00 97.00 29.50 36.00 67.50 413.50 728.50 1100.00 5916.00
1964 988.00 838.00 764.50 586.00 365.50 113.00 33.50 101.00 237.00 463.00 805.50 1172.00 6467.00
1965 1120.50 769.00 739.00 437.50 271.50 53.00 31.00 40.50 213.50 387.50 679.00 1054.50 5796.50
1966 1112.00 774.00 669.50 392.00 225.00 135.00 33.00 12.00 30.50 402.00 636.50 887.50 5309.00
1967 821.00 663.50 723.50 603.00 235.50 33.50 4.50 0.00 52.50 408.00 740.50 1038.00 5323.50
1968 1057.00 725.50 591.50 514.50 260.50 83.00 21.00 68.00 139.00 579.50 760.50 1137.00 5937.00
1969 1452.50 1024.00 718.50 502.00 166.00 45.00 22.00 41.00 151.00 548.50 758.50 978.00 6407.00
1970 1135.50 700.50 663.00 563.00 205.50 55.50 13.00 5.00 227.50 508.50 792.00 1148.50 6017.50
1971 938.50 761.00 817.50 517.00 164.00 145.00 55.50 21.00 288.00 557.00 797.50 1156.00 6218.00
1972 1104.50 950.50 645.00 584.00 199.50 57.00 27.00 12.50 264.50 494.50 725.50 1185.50 6250.00
1973 1161.50 765.00 619.50 398.50 236.00 100.50 15.00 44.00 134.50 491.50 822.50 903.00 5691.50
1974 1165.50 698.00 661.50 440.00 335.50 74.00 47.00 9.00 82.50 459.50 713.00 924.50 5610.00
1975 1081.00 895.00 749.50 548.50 237.50 83.50 1.00 40.50 107.00 485.00 817.00 939.50 5985.00
1976 1009.50 866.00 803.00 509.00 275.00 179.00 29.00 57.00 65.00 479.50 778.50 1088.50 6139.00
1977 1256.50 736.50 691.00 333.00 380.00 35.00 35.00 26.00 223.00 498.50 872.00 975.50 6062.00
1978 1000.00 760.00 595.00 469.00 317.50 75.00 7.00 57.50 191.50 480.00 982.50 1162.50 6097.50
1979 1556.50 907.50 650.00 462.50 183.00 74.00 30.50 4.00 63.00 377.50 927.00 935.50 6171.00
1980 1372.00 909.00 660.50 341.00 196.00 112.00 26.00 45.00 104.50 421.50 739.50 937.00 5864.00
1981 779.50 719.50 537.00 464.50 262.50 124.00 42.00 9.00 167.00 503.00 716.00 1079.00 5403.00
1982 1202.00 791.50 683.00 577.50 284.00 74.00 46.00 32.50 170.00 496.50 877.00 1117.50 6351.50
1983 849.00 695.50 534.00 457.50 196.50 95.50 35.00 2.50 212.00 447.50 679.50 1329.00 5533.50
1984 1049.50 790.00 611.00 537.00 393.50 147.50 14.50 25.00 204.50 556.50 866.50 1394.50 6590.00
1985 1198.00 1010.50 717.00 426.50 224.00 66.50 0.50 37.00 292.50 569.00 1260.00 1423.50 7225.00
1986 1084.50 836.00 602.00 530.50 296.50 46.00 63.00 2.50 261.50 431.50 796.50 1131.00 6081.50
1987 1144.00 767.00 651.00 378.50 197.00 76.50 34.00 21.00 115.50 455.00 746.50 1116.00 5702.00
1988 1123.00 778.00 706.00 418.50 319.00 143.00 33.50 15.50 202.50 309.50 767.50 1145.50 5961.50
1989 970.50 1081.00 774.50 389.50 276.50 55.50 27.00 32.50 124.00 504.00 700.00 1042.00 5977.00
1990 884.50 834.00 642.00 351.50 312.50 116.00 16.00 25.50 37.50 565.00 704.50 1309.00 5798.00
1991 1158.00 658.50 757.50 473.00 313.00 159.00 5.50 14.00 66.50 507.00 803.50 935.50 5851.00
1992 933.00 719.00 524.00 428.50 165.00 34.50 10.50 37.50 191.00 434.00 805.00 1255.50 5537.50
1993 1283.50 1015.50 752.00 515.50 157.50 128.00 86.50 55.50 176.00 413.00 1010.50 991.00 6584.50
1994 889.50 887.50 645.50 380.00 189.00 130.00 11.50 11.50 58.50 479.00 884.00 1009.00 5575.00
1995 1014.00 700.00 687.50 510.50 199.00 124.00 9.00 77.00 100.00 532.00 711.50 1047.00 5711.50
1996 1189.50 973.50 687.50 462.50 372.50 95.50 24.50 25.50 235.00 551.50 936.00 1300.00 6853.50
1997 1174.50 830.50 664.50 523.00 191.00 103.50 19.00 7.00 102.00 526.50 763.50 1089.50 5994.50
1998 1085.00 725.50 658.50 462.00 229.50 50.00 0.00 18.00 80.00 545.50 721.00 1063.50 5638.50
1999 946.50 748.00 727.50 540.00 365.50 131.00 53.50 40.00 177.00 547.00 664.00 917.50 5857.50
2000 1089.00 824.00 702.00 406.50 254.50 73.50 34.00 37.50 195.50 507.00 1011.50 1141.00 6276.00
2001 1009.00 856.00 660.00 528.00 251.00 132.50 21.50 13.50 87.50 500.00 759.50 996.50 5815.00
2002 937.00 789.00 798.00 486.50 304.00 81.50 22.50 33.50 173.00 573.00 818.00 920.00 5936.00
2003 874.00 752.00 598.50 480.00 280.50 38.00 8.50 1.00 115.00 362.50 942.50 1091.50 5544.00
2004 1139.50 830.00 585.00 403.50 246.50 100.00 12.50 16.50 162.50 426.50 826.00 949.00 5697.50
2005 1084.00 807.50 607.00 446.00 185.00 112.00 2.50 9.50 190.00 456.00 882.00 1215.50 5997.00
2006 920.00 847.50 724.00 480.50 267.50 54.00 1.50 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3293.50
Period of Record Statistics
MEAN 1110.39 825.59 691.07 469.36 251.01 91.50 24.42 29.48 152.19 480.88 811.51 1071.80 6009.13
S.D. 186.34 115.86 76.53 71.50 72.92 40.63 18.52 22.12 63.56 65.20 113.29 132.80 416.25
SKEW 0.80 0.92 -0.12 0.06 -0.06 0.41 0.94 1.05 0.13 -0.67 1.18 0.69 0.44
MAX 1630.00 1225.50 864.00 638.00 393.50 194.50 86.50 101.00 292.50 594.00 1260.00 1423.50 7225.00
MIN 779.50 623.50 524.00 333.00 71.00 9.50 0.00 0.00 30.50 287.00 636.50 887.50 5185.00
NO YRS 60 60 60 60 60 60 59 59 60 60 60 60 59